Background: Sustaining productive student-student dialogue in online collaborative inquiry learning is challenging, and teacher support is limited when needed in multiple groups simultaneously. Collaborative conversational agents (CCAs) have been used in the past to support student dialogue. Yet, research is needed to reveal the characteristics…

In this paper, we present a synchronous text-based communication tool, referred to as Adaptive Communication Tool (ACT), which provides capabilities for adaptation and personalization. ACT supports both the free and the structured form of dialogue. The structured dialogue is implemented by two types of Scaffolding Sentence Templates (SST); i.e.…

Describes the Vicarious Learner Project, a project which investigates the fundamental role of dialog for learning, specifically the benefits to learners of being able to observe others participating in discussion. Theoretical aspects of the work, a high-level process model of learning, and a more detailed logic model of what happens in educational…